This is a great video about the history and usefulness of wooden ladders to the San Francisco Fire Department. In a job where wood seems like the last option for battling flames, the San Francisco fire department has used wooden ladders for over a century because of their durability, heaviness, sturdiness, and overall advantage over San Francisco’s low-hanging power lines. This video shows how one ladder making company is responsible for upkeeping and creating new ladders for use in saving many lives each year. [via]